Endometrial cancer is a type of uterine cancer that starts in the inner lining of the uterus. This lining is called the endometrium. It most often is found only inside the uterus. Endometrial starts when cells in the endometrium (the inner lining of the uterus) start to grow out of control. It grows more rapidly and can spread to other parts of the body.
Endometrial cancer is sometimes called uterine cancer. Other types of cancer can form in the uterus, including uterine sarcoma, but they are much less common than cancer. Signs and symptoms of cancer include unusual vaginal bleeding or pain in the pelvis.